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redmodelt · 05-22-2015, 10:47 AM

There are too many things that come into play to give an answer to that question. Was the temperature taken at the block, outlet or radiator?
Radiator condition, new used cleaned?
How are the water passages in the block?
How is the fuel flow to the carburetor?
What are the jet sizes?
What carburetor?
Which intake are you using?
What cam shaft grind is used?
Which cam do you have in the distributor?
6 or 12 Volts?
Condenser and coil condition?
Points gap?
Modern electronic ignition?
How is it timed and how are you setting the timing while driving?
How are you setting the GVA?
Yes even what is the outside temperature (fuel does expand as it get warmer)?
What are the driving conditions, flat hilly or mountain?
How high above sea level?
Which muffler is used, back pressure can affect temperature?
Like Model T's each engine and driver is different for A's. If you got in and drove someone's car and set it where is seemed right to you, you might get different readings then them.

05-22-2015, 10:47 AM	#11
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,408	Re: thermostat function There are too many things that come into play to give an answer to that question. Was the temperature taken at the block, outlet or radiator? Radiator condition, new used cleaned? How are the water passages in the block? How is the fuel flow to the carburetor? What are the jet sizes? What carburetor? Which intake are you using? What cam shaft grind is used? Which cam do you have in the distributor? 6 or 12 Volts? Condenser and coil condition? Points gap? Modern electronic ignition? How is it timed and how are you setting the timing while driving? How are you setting the GVA? Yes even what is the outside temperature (fuel does expand as it get warmer)? What are the driving conditions, flat hilly or mountain? How high above sea level? Which muffler is used, back pressure can affect temperature? Like Model T's each engine and driver is different for A's. If you got in and drove someone's car and set it where is seemed right to you, you might get different readings then them.